Add related_applications field to manifest parser.

content/public/common/manifest.h

Index: content/public/common/manifest.h
diff --git a/content/public/common/manifest.h b/content/public/common/manifest.h
index 95180e21f7330e07d44c77a322d1e5bfa6114d00..975d3506000afc261ea7f33829faade356278522 100644
--- a/content/public/common/manifest.h
+++ b/content/public/common/manifest.h
@@ -27,6 +27,12 @@ struct CONTENT_EXPORT Manifest {
     DISPLAY_MODE_BROWSER
   };
 
+  enum ChromeRelatedApplicationPlatform {
+    CHROME_RELATED_APPLICATION_PLATFORM_UNSPECIFIED,
+    CHROME_RELATED_APPLICATION_PLATFORM_ANDROID,
+    CHROME_RELATED_APPLICATION_PLATFORM_WEB,
+  };
+
   // Structure representing an icon as per the Manifest specification, see:
   // http://w3c.github.io/manifest/#dfn-icon-object
   struct CONTENT_EXPORT Icon {
@@ -54,6 +60,19 @@ struct CONTENT_EXPORT Manifest {
     static const double kDefaultDensity;
   };
 
+  // Structure representing a related application.
+  struct CONTENT_EXPORT ChromeRelatedApplication {
+    ChromeRelatedApplication();
+    ~ChromeRelatedApplication();
+
+    // The platform the application runs on.
+    ChromeRelatedApplicationPlatform platform;
+
+    // Platform specific key identifying the application. May not be present
+    // for some platforms (e.g. WEB).
+    base::NullableString16 id;

[jschuh, 2015/02/17 21:55:12]

Any way we can make this type more specific? I'm just very wary of complex data
getting smuggled around in strings.

[benwells, 2015/02/17 22:11:16]

It's a string like "com.chrome.beta". In some cases it won't be present at all.

Note sure if it can represented in anything else...

Note: this CL will change fairly significantly once avi's changes are worked in.

+  };
+
   Manifest();
   ~Manifest();
 
@@ -92,6 +111,13 @@ struct CONTENT_EXPORT Manifest {
   // False if parsing failed or the field was not present.
   bool gcm_user_visible_only;
 
+  // This is a proprietary extension of the web Manifest, double-check that it
+  // is okay to use this entry.
+  // Empty if the parsing failed, the field was not present, empty or all the
+  // applications inside the array were invalid. The order of the array is
+  // important and indicates the priority of the applications to use.
+  std::vector<ChromeRelatedApplication> chrome_related_applications;
+
   // Maximum length for all the strings inside the Manifest when it is sent over
   // IPC. The renderer process should truncate the strings before sending the
   // Manifest and the browser process must do the same when receiving it.