Add ContextualSearchParams constructor to be called when content is passed via...

Add ContextualSearchParams constructor to be called when content is passed via HTTP header and not CGI params.

BUG=376007

Review URL: https://codereview.chromium.org/573063002

Cr-Commit-Position: refs/heads/master@{#295204}

components/search_engines/template_url.cc

@@ -204,20 +204,15 @@ TemplateURLRef::SearchTermsArgs::ContextualSearchParams::
 TemplateURLRef::SearchTermsArgs::ContextualSearchParams::
     ContextualSearchParams(
         const int version,
-        const size_t start,
-        const size_t end,
         const std::string& selection,
-        const std::string& content,
         const std::string& base_page_url,
-        const std::string& encoding)
+        const bool resolve)
     : version(version),
-      start(start),
-      end(end),
+      start(base::string16::npos),
+      end(base::string16::npos),
       selection(selection),
-      content(content),
       base_page_url(base_page_url),
-      encoding(encoding),
-      resolve(true) {
+      resolve(resolve) {
 }
 
 TemplateURLRef::SearchTermsArgs::ContextualSearchParams::

components/search_engines/template_url.h

@@ -74,14 +74,15 @@ class TemplateURLRef {
 
     struct ContextualSearchParams {
       ContextualSearchParams();
-      // TODO(jeremycho): Delete constructor once Clank no longer depends on it.
+      // Used when the content is sent in the HTTP header instead of as CGI
+      // parameters.
+      // TODO(jeremycho): Remove base_page_url and selection parameters once
+      // they are logged from the HTTP header.
       ContextualSearchParams(const int version,
-                             const size_t start,
-                             const size_t end,
                              const std::string& selection,
-                             const std::string& content,
                              const std::string& base_page_url,
-                             const std::string& encoding);
+                             const bool resolve);
+      // TODO(jeremycho): Delete constructor once Clank no longer depends on it.
       ContextualSearchParams(const int version,
                              const size_t start,
                              const size_t end,