This CL contains the back-end implementation of the translate feature. It adds a Translate method to the renderer.

On invocation this method triggers a traversal of the DOM page to retrieve the text nodes.  The text node contents are then sent to the browser for actual translation (at this point, we just up-case the text for testing purpose).
The browser sends back the translated text to the renderer that replace the DOM text node values with the translated text.

BUG=None
TEST=Run the unit-tests.
Review URL: http://codereview.chromium.org/547013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@36258 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 18 insertions, 0 deletions

diff --git a/base/string_util_unittest.cc b/base/string_util_unittest.cc
index 2c1f484..9d848a4 100644
--- a/base/string_util_unittest.cc
+++ b/base/string_util_unittest.cc
@@ -166,6 +166,24 @@ TEST(StringUtilTest, CollapseWhitespaceASCII) {
   }
 }
 
+TEST(StringUtilTest, ContainsOnlyWhitespaceASCII) {
+  EXPECT_TRUE(ContainsOnlyWhitespaceASCII(""));
+  EXPECT_TRUE(ContainsOnlyWhitespaceASCII(" "));
+  EXPECT_TRUE(ContainsOnlyWhitespaceASCII("\t"));
+  EXPECT_TRUE(ContainsOnlyWhitespaceASCII("\t \r \n  "));
+  EXPECT_FALSE(ContainsOnlyWhitespaceASCII("a"));
+  EXPECT_FALSE(ContainsOnlyWhitespaceASCII("\thello\r \n  "));
+}
+
+TEST(StringUtilTest, ContainsOnlyWhitespace) {
+  EXPECT_TRUE(ContainsOnlyWhitespace(ASCIIToUTF16("")));
+  EXPECT_TRUE(ContainsOnlyWhitespace(ASCIIToUTF16(" ")));
+  EXPECT_TRUE(ContainsOnlyWhitespace(ASCIIToUTF16("\t")));
+  EXPECT_TRUE(ContainsOnlyWhitespace(ASCIIToUTF16("\t \r \n  ")));
+  EXPECT_FALSE(ContainsOnlyWhitespace(ASCIIToUTF16("a")));
+  EXPECT_FALSE(ContainsOnlyWhitespace(ASCIIToUTF16("\thello\r \n  ")));
+}
+
 TEST(StringUtilTest, IsStringUTF8) {
   EXPECT_TRUE(IsStringUTF8("abc"));
   EXPECT_TRUE(IsStringUTF8("\xc2\x81"));