Sometimes you need to use API Keys to use things like the Speech API. And then you Google a bit and follow all the instructions. But the Chromium Project's API Keys page does a not-so-great of explaining how to do this, so I will.
- Download Chromium.
 - You'll notice a yellow disclaimer message appear as a doorhanger: 
Google API Keys are missing. Some functionality of Chromium will be disabled.Learn More. - Clicking on that link takes you to the confusing API Keys docs page.
 - If you aren't already, subscribe to the [email protected] mailing list. (You can just subscribe to the list and choose to not receive any mail. FYI: the Chromium project restricts the APIs to those subscribed to that group - that is, Chromium devs.)
 - Make sure you are logged in with the Google account associated with the email address that you used to subscribe to chromium-dev.
 - Log in to the Google Cloud Platform, and select an existing project or press the "Create Project" button.
 - From the project's API Manager, select the Credentials tab in the sidebar.
 - Create a Browser API Key.
 - You'll see a modal with an API key. Copy and paste that somewhere.
 - Now create an OAuth Client ID.
 - After you complete all the steps and the "content screen," you'll be presented with a modal with your Google Client ID and Client Secret.
 - You'll need to set three environment variables:
 
On Windows:
Launch cmd.exe and enter the following commands:
setx GOOGLE_API_KEY your_key_goes_here
setx GOOGLE_DEFAULT_CLIENT_ID your_client_id_goes_here
setx GOOGLE_DEFAULT_CLIENT_SECRET your_client_secret_goes_hereOn Mac OS X / Linux:
Plop these in your ~/.profile file:
export GOOGLE_API_KEY="your_key_goes_here"
export GOOGLE_DEFAULT_CLIENT_ID="your_client_id_goes_here"
export GOOGLE_DEFAULT_CLIENT_SECRET="your_client_secret_goes_here"- 
Now launch Chromium:
On Windows: Launch Chromium normally.
On Mac OS X:
/Applications/Chromium.app/Contents/MacOS/Chromium
 - 
If it does not working