VinF Hybrid Inference #3: Implement ChromeAdapter

[erikeldridge]

PR #8877 introduces an internal abstraction called ChromeAdapter that encapsulates logic for detecting Chrome's API and using it for inference. Having agreed that abstraction seems reasonable, this PR implements it.

[changeset-bot]

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Latest commit: 5dfd435

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[github-actions]

Vertex AI Mock Responses Check ⚠️

A newer major version of the mock responses for Vertex AI unit tests is available. update_vertexai_responses.sh should be updated to clone the latest version of the responses: v10.0

[google-oss-bot]

Size Report ¹

Affected Products

• @firebase/util

  Type	Base (08d341f)	Merge (8751e39)	Diff
  browser	23.3 kB	23.4 kB	+108 B (+0.5%)
  main	29.3 kB	29.4 kB	+170 B (+0.6%)
  module	23.3 kB	23.4 kB	+108 B (+0.5%)

• @firebase/vertexai

  Type	Base (08d341f)	Merge (8751e39)	Diff
  browser	35.8 kB	37.7 kB	+1.83 kB (+5.1%)
  main	36.8 kB	38.6 kB	+1.83 kB (+5.0%)
  module	35.8 kB	37.7 kB	+1.83 kB (+5.1%)

• firebase

  Type	Base (08d341f)	Merge (8751e39)	Diff
  firebase-vertexai.js	28.9 kB	34.5 kB	+5.57 kB (+19.3%)

Test Logs

• Base (08d341f): https://github.com/firebase/firebase-js-sdk/actions/runs/14252673884
• Merge (8751e39): https://github.com/firebase/firebase-js-sdk/actions/runs/14389440968

1. https://storage.googleapis.com/firebase-sdk-metric-reports/N0GAIbzpfS.html

[google-oss-bot]

Size Analysis Report ¹

Affected Products

• @firebase/util

  • isChrome

    Size

    Type	Base (08d341f)	Merge (8751e39)	Diff
    size	?	4.28 kB	? (?)
    size-with-ext-deps	?	4.28 kB	? (?)

    Dependency

    Type	Base (08d341f)	Merge (8751e39)	Diff
    functions	?	getGlobal isChrome isNode	?
    classes	?	DecodeBase64StringError	?
    variables	?	base64 base64Decode byteArrayToString getDefaults getDefaultsFromCookie getDefaultsFromEnvVariable getDefaultsFromGlobal getDefaultsFromPostinstall stringToByteArray$1	?
    enums	?		?

• @firebase/vertexai

  • ChatSession

    Size

    Type	Base (08d341f)	Merge (8751e39)	Diff
    size	16.0 kB	16.0 kB	-16 B (-0.1%)
    size-with-ext-deps	34.9 kB	34.9 kB	-16 B (-0.0%)

  • GenerativeModel

    Size

    Type	Base (08d341f)	Merge (8751e39)	Diff
    size	19.2 kB	19.2 kB	-16 B (-0.1%)
    size-with-ext-deps	38.2 kB	38.2 kB	-16 B (-0.0%)

  • ImagenModel

    Size

    Type	Base (08d341f)	Merge (8751e39)	Diff
    size	21.0 kB	20.9 kB	-16 B (-0.1%)
    size-with-ext-deps	39.9 kB	39.9 kB	-16 B (-0.0%)

  • VertexAIModel

    Size

    Type	Base (08d341f)	Merge (8751e39)	Diff
    size	19.2 kB	19.2 kB	-16 B (-0.1%)
    size-with-ext-deps	38.2 kB	38.2 kB	-16 B (-0.0%)

  • getGenerativeModel

    Size

    Type	Base (08d341f)	Merge (8751e39)	Diff
    size	19.7 kB	21.2 kB	+1.50 kB (+7.6%)
    size-with-ext-deps	38.7 kB	41.4 kB	+2.68 kB (+6.9%)

    External Dependency

    Module	Base (08d341f)	Merge (8751e39)	Diff
    @firebase/util	FirebaseError	FirebaseError isChrome	+ isChrome

  • getImagenModel

    Size

    Type	Base (08d341f)	Merge (8751e39)	Diff
    size	21.1 kB	21.1 kB	-16 B (-0.1%)
    size-with-ext-deps	40.1 kB	40.1 kB	-16 B (-0.0%)

Test Logs

• Base (08d341f): https://github.com/firebase/firebase-js-sdk/actions/runs/14252673884
• Merge (8751e39): https://github.com/firebase/firebase-js-sdk/actions/runs/14389440968

1. https://storage.googleapis.com/firebase-sdk-metric-reports/qeOjBSfhYN.html

[erikeldridge]

Since this will only be prerelease, we're merging into a non-main branch.

To avoid confusion, I'll close this in favor of #8943

I've added the review feedback to our burndown.