Rename pdf plugins name from chromium to chrome

Some google sites check pdf plugin name and do a different behavior whether
browser has chrome pdf plugin or not.
Ex, google docs print menu displays print preview when chrome pdf plugin is available.
Otherwise, just tries to download that documents as a pdf document.

patches/chrome-common-chrome_content_client_constants.cc.patch

@@ -0,0 +1,16 @@
+diff --git a/chrome/common/chrome_content_client_constants.cc b/chrome/common/chrome_content_client_constants.cc
+index a8365688d3ea165e26bc6a9e1b1851cbacaf59b2..a4f7083b44b8c6d9614bc5f1d72ddd78ff602900 100644
+--- a/chrome/common/chrome_content_client_constants.cc
++++ b/chrome/common/chrome_content_client_constants.cc
+@@ -19,9 +19,9 @@ const char ChromeContentClient::kPDFExtensionPluginName[] = "Chrome PDF Viewer";
+ const char ChromeContentClient::kPDFInternalPluginName[] = "Chrome PDF Plugin";
+ #else
+ const char ChromeContentClient::kPDFExtensionPluginName[] =
+-    "Chromium PDF Viewer";
++    "Chrome PDF Viewer";
+ const char ChromeContentClient::kPDFInternalPluginName[] =
+-    "Chromium PDF Plugin";
++    "Chrome PDF Plugin";
+ #endif
+
+ const base::FilePath::CharType ChromeContentClient::kPDFPluginPath[] =