Store and load icudtl.dat directly from the apk rather than extracting on start-up

chrome/browser/chrome_content_browser_client.h

Index: chrome/browser/chrome_content_browser_client.h
diff --git a/chrome/browser/chrome_content_browser_client.h b/chrome/browser/chrome_content_browser_client.h
index 89f7b2231df55e6944cadf2fbd1804afd7e54e08..d688dc4340534623ed4844d06f103fed5b77efe7 100644
--- a/chrome/browser/chrome_content_browser_client.h
+++ b/chrome/browser/chrome_content_browser_client.h
@@ -243,7 +243,11 @@ class ChromeContentBrowserClient : public content::ContentBrowserClient {
   void GetAdditionalMappedFilesForChildProcess(
       const base::CommandLine& command_line,
       int child_process_id,
-      content::FileDescriptorInfo* mappings) override;
+      content::FileDescriptorInfo* mappings
+#if defined(OS_ANDROID)
+      , std::map<int, base::MemoryMappedFile::Region>* regions
+#endif
+      ) override;
 #endif
 #if defined(OS_WIN)
   const wchar_t* GetResourceDllName() override;
@@ -305,6 +309,10 @@ class ChromeContentBrowserClient : public content::ContentBrowserClient {
   base::ScopedFD v8_natives_fd_;
   base::ScopedFD v8_snapshot_fd_;
 #endif  // OS_POSIX && !OS_MACOSX
+#if defined(OS_ANDROID)
+  base::ScopedFD icudtl_fd_;
+  base::MemoryMappedFile::Region icudtl_region_;
+#endif
 
   // Vector of additional ChromeContentBrowserClientParts.
   // Parts are deleted in the reverse order they are added.