Omnibox: HistoryQuick Provider: Index Farther Into URL and Title

Record word break information for the first 200 characters in a URL or
title, not the first 50 characters.  This is important because we
generally drop URL suggestions that we think do not match at a word
break.

Tested locally on a longer URL from the bug.

TBR=sky
(because this change is trivial)

BUG=291294

Review URL: https://codereview.chromium.org/306963002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@273837 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/history/in_memory_url_index_types.h

@@ -17,7 +17,7 @@ namespace history {
 
 // The maximum number of characters to consider from an URL and page title
 // while matching user-typed terms.
-const size_t kMaxSignificantChars = 50;
+const size_t kMaxSignificantChars = 200;
 
 // Matches within URL and Title Strings ----------------------------------------
 

chrome/browser/history/in_memory_url_index_types_unittest.cc

@@ -69,7 +69,7 @@ TEST_F(InMemoryURLIndexTypesTest, StaticFunctions) {
   string_vec = String16VectorFromString16(string_c, false, &actual_starts_c);
   ASSERT_EQ(8U, string_vec.size());
   // Note that we stop collecting words and word starts at kMaxSignificantChars.
-  size_t expected_starts_c[] = {1, 7, 16, 22, 32, 43};
+  size_t expected_starts_c[] = {1, 7, 16, 22, 32, 43, 52, 55};
   EXPECT_TRUE(IntArraysEqual(expected_starts_c, arraysize(expected_starts_c),
                              actual_starts_c));
 

chrome/browser/history/url_index_private_data.h

@@ -33,7 +33,7 @@ class InMemoryURLIndex;
 class RefCountedBool;
 
 // Current version of the cache file.
-static const int kCurrentCacheFileVersion = 4;
+static const int kCurrentCacheFileVersion = 5;
 
 // A structure private to InMemoryURLIndex describing its internal data and
 // providing for restoring, rebuilding and updating that internal data. As